package com.hmall.order.utils;

import com.alibaba.cloud.commons.lang.StringUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@Slf4j
public class UserInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //1.获取请求头
        String authorization = request.getHeader("authorization");
        if (StringUtils.isBlank(authorization)) {

            log.warn("非法用户访问!请求路径:{}",request.getRequestURI());
            //没有用户信息,未登录
            throw new RuntimeException("用户未登录");
            //或者 return false; response.setStatus(403);
        }
        //2.转换用户id
        Long userId = Long.valueOf(authorization);
        //3.存入ThreadLocal
        UserHolder.setUser(userId);
        //4.放行
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        //用完清理掉
        UserHolder.removeUser();
    }

}
